1. A pipetting device, comprising a base plate, an elastic sealing plate that covers the outside of the base plate, a plurality of pipetting channels arranged in a predetermined grid extending through the base plate and the sealing plate, a magazine loaded in the same grid with pipette tips, each pipette tip having a shoulder, said magazine arranged in a magazine holder indirectly frictionally connected via the shoulders and the sealing plate with the base plate, and a drive motor, indirectly connected to the eccentric shafts of two identical eccentric drives that are permanently mounted on the support on the base plate and each of which having an eccentric pin that is offset by a distance with respect to the axis of the eccentric shaft, one T-shaped gravitational pendulum being suspended from each of said eccentric pins, said magazine holder being formed by a U-shaped magazine frame with a bearing surface on the inside and the magazine frame, on its lateral legs, is connected to the cross member of each gravitational pendulum so as to be able to lift and lower the magazine frame relative to the base plate.
2. The pipetting device of claim 1, further comprising an additional identical stepdown gear arranged in the connection between the drive motor and the eccentric shafts of the eccentric drives.
3. The pipetting device of claim 2, wherein the stepdown gear units are worm gears.
4. The pipetting device of claim 3, wherein the worm wheels of the worm gear units form the eccentric disks of the eccentric drives.
5. The pipetting device of claim 1, wherein the connection between the cross member of the gravitational pendulum and the legs of the magazine frame is formed by small rotatable eccentric studs.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
We claim:
1. A catheter, comprising:
a catheter body having a first lumen extending between a proximal portion and a distal portion;
a resilient support member extending about said first lumen from said catheter proximal portion to a location short or said distal portion; and
a tubular rigid support member extending about said first lumen from proximate said resilient member distal portion to said lumen distal portion.
2. The catheter as specified in claim 1 wherein said catheter body further comprises hinge means disposed proximal said rigid support member for hinging said catheter body distal portion.
3. The catheter as specified in claim 2 wherein said hinge means comprises a detent.
4. The catheter as specified in claim 2 further comprising an inflatable elastomeric balloon disposed about said catheter distal portion and means to inflate said balloon.
5. The catheter as specified in claim 1 wherein said rigid support member is malleable.
6. The catheter as specified in claim 5 wherein said rigid support member and said catheter body distal portion is curved along a curved portion.
7. The catheter as specified in claim 6 further comprising an inflatable balloon disposed between said curved portion and said catheter distal portion, and means for inflating said balloon.
8. The catheter as specified in claim 1 further comprising a thin film disposed about said resilient support member sealing said resilient support member within said first lumen.
9. The catheter as specified in claim 1 wherein said resilient member is secured to said rigid support member.
10. The catheter as specified in claim 1 wherein said resilient support member comprises a coil.
11. The catheter as specified in claim 10 wherein said coil is disposed about and secured to said tubular support member.
12. The catheter as specified in claim 10 wherein said coil is disposed within and secured to said tubular support member.
13. The catheter as specified in claim 10 wherein said catheter body comprises an elastomeric material.
14. The catheter as specified in claim 13 wherein said elastomeric material comprises silicone.
15. The catheter as specified in claim 3 wherein said balloon comprises silicone.
16. The catheter as specified in claim 1 further comprising a second lumen extending within said catheter body to said catheter body distal portion.
17. The catheter as specified in claim 16 wherein said catheter body comprises silicone.
18. The catheter as specified in claim 2 wherein said rigid support member is disposed proximate, but spaced from, said resilient support member to define a first catheter section comprising said hinge means.
19. The catheter as specified in claim 18 wherein said first catheter section further comprises a detent.
20. The catheter as specified in claim 18 wherein said first catheter section has a thinned wall thickness.
21. A method of manipulating a catheter within a body vessel extending lengthwise, comprising the steps of:
a) inserting said catheter having a first lumen extending between a proximal portion and a distal portion into the vessel, said catheter having a resilient support member extending about said first lumen from said catheter proximal portion to a location short of said catheter distal portion, said catheter having a tubular rigid support member extending about said first lumen from proximate said resilient member distal portion to said catheter distal portion; and
b) advancing said catheter into the vessel such that said catheter distal portion is positioned along said length of the vessel.
22. The method of claim 21 wherein said distal portion of said catheter remains positioned substantially parallel to the length of the vessel during said advancing step.
23. The method of claim 21 further comprising the step of axially manipulating said catheter within the vessel, wherein said distal portion of said catheter remains positioned parallel to the length of the vessel.
24. The method of claim 21 further comprising the step of holding said catheter distal portion supported by said rigid support member of said catheter while advancing said catheter within the vessel.
25. The method of claim 21 further comprising the step of infusing a fluid into the body vessel via said lumen.
26. The method of claim 21 further comprising the step of aspirating a fluid from the body vessel via said lumen.
27. The method of claim 21 wherein said catheter further comprises a hinge means disposed proximal said rigid support member for hinging said catheter body distal portion.
28. The method of claim 21 wherein said catheter further comprises an inflatable elastomeric balloon disposed about said catheter distal portion and means to inflate said balloon, further comprising the steps of inflating said elastomeric balloon to occlude a portion of the body vessel.
29. The method of claim 21 wherein the body vessel comprises an aorta, further comprising the step of advancing said catheter upwardly into the aorta.
30. The method of claim 21 wherein said resilient support member is sealingly imbedded within said catheter.
31. The method of claim 30 wherein said resilient support member is sealed within said catheter with a thin layer of polymeric material.
32. The method of claim 21 wherein said rigid support member and said catheter body distal portion are curved along a curved portion.
33. The method of claim 21 wherein a distal portion of said resilient support member resides securely within said rigid support member.
34. The method of claim 21 wherein said resilient support member is spaced apart from said rigid support member.
35. The method of claim 21 wherein said resilient support member abuts said rigid support member.